It's a ground prop and 3 backdrop props to choose from, (...i couldn't so i included all 3 of them).
The light, that i used for the preview, is also … more »

It's a ground prop and 3 backdrop props to choose from, (...i couldn't so i included all 3 of them).
The light, that i used for the preview, is also included.
If the ground is to bumpy for you, you may set the yScale to 50% to make it more flat.
The backdrop is curved but you can flaten it too, with the "flat-curve"dial which is actually the zScale. The prop can be used for personal or commercial renders. « Less